Disk harrow



Aug.- 26 y1924. A 1,506,595

H. H. LOHMEYER blsx HARRow Filed MarCh 9. 1923 2 Sheets-Shoot l 42 me/rde@ 35 jZa/afyer ttornmm CII Fatenerl fitug., 26? 1924-.

UNTED 'I'EQS P Tf EN 1T'Y G F l` Q HENRYr H.- .LOHMEYE-R', OF AMBROS-E, NORiTIID'AKOTA,

DISK"y HAIER-OW( To all whom t 77mg/ concern.'

Be it known thatl, HENRY l-LLOHMEYER, a citizen ofA the United States, residingat Ambrose, in thev county of Divide and State of North Dakota, have invented certain new and useful lmprovements in Disk Harrows, of which the following isa specification.

rllhis invention relates to a disk harrow and particularly to a construction comprising a multiple of'gangs intandeinarrangement.

In the prior art the resistance in the turning movement of the harrow due to the endwise pressure upon thefdisk gangs has proven a serious disadvantage in practical application and it has also been found importantto secure a normal rigid draft connection between the gangs as7 ifiloosely connectedA to permitturning movement, they cannot be properly controlled and held in their angular relation to the line of" draft.

The present inventiony has for anV object to provide adraft connection between the gang harrows. which is practically rigid under normal conditions but1 adaptedxto yield `under abnormal conditions,.such as in, turning in the iield, and such yielding may be e'llected either automaticallyl by the strain of the draft connection or manually by a `manipulation of such connections.

fr further object of the invention is to provide an improved form of draft connection between the front and rear harrow gangs comprising, a. pivoted lever having a seat at opposite-y ends a'dapted toA receive a craft member said lever' being yieldably supported in its normal position but adapted to change its position to permitthe draft member Yto travel from one to the otherseat thereon.

Another' objectof. the invention is to provide means for mounting the draft connection between the harrow gangs toI permit its relative adjustment and. also the adjustment of the tension by which the lever inen'iber thereof is held in; normal position.

Other and further objects and advantages of 4the invention will. be hereinafter set forth andthe novel features thereofid'etined by the appended claims.

1n the drawings:

Figure 1 is a perspective showing theinvention applied.

Fig-ure 2 is an enlargedV detail. elevation thereof.

Serial. No: 62398.

Figure 3 asimilar view from the opposite sideto Figure-"1.

Figure is aadetail section on line 4--1 of Figure 3.

Figure 5- isV a detail perspective of the mounting bracket for the draft lever.

Figure. G.; is avdetail elevation off a modilied form' of this bracket.

Figaire 7 is a section on line 7 7' of F igure 6.A

Like numerals refer to like parts'inthe several figures ofthe drawings.

The invention is applicable to any construction or arrangementof a gang harrow and for the purpose ofuillustration is shown in connection with gangs-of disk harrows 10 carried by frames 11 and forming a front unit, these frames being' mounted in theusual manner for pivotalmovement and adjustment relative to the line of draf-t by means of. a lever Thefrear unit comprises gangs ofy disks lcarried by frames 1st and controlledl similarly to the front gangs by a leverr 1,5.` rlhe front. and rear gangsare connected for relative pivotal movement by any ordinary means as indicated at 16.

Upon one ofthe gan-g unitsT for-instance the rear gang. adraft lever 1f? is mounted inV any desired manner, preferably upon the frame 18 of the harrow gang bymeans-of a bracket 19 which may be of varied const-ruet'ion'and is secured' to the frame by bolts 20y or otherY suitable devices. TheA bracket 19 comprises a horizontal plate 21 forvbolt ing,v to the barrow frame and a vertical plate 22. upony which the draft lever. l? is pirated as at 23 and the rear-ward swing of this lever is controlled by an abutment 2f-l at the base of a recessinthe plate21 which is entered by the endl 25 of the lever; attached to the'braeket isv a; verticalplate 26 provided with. aperturesf2` forthe adjustable connection of a restoring tension spring 28 which extends to the opposite cud 29 ofthe lever ands may bey connected thereto by any suitable meanssuch asthef chainl sectionv 8O?y engagingauhookl 31.. By changing theengagement ofl the chain linkswith this heck thetensi-on of this` spring may-be adjusted: and= the same result may` be also effected by the changing of the'vlower end of the spring from one of the eyes 27 to the other.v

The lever 17 isformed adjacent. to its pivotal end with a seat 32 and at its opposite end with a corresponding seat 33 the intervening inner face thereof compris ing a. track 34 adapted to be traversed by means carried by a draft connection 35.

This connection may be of any preferred character but is herein shown as comprising a roller 36 connected by opposite plates 37 with a chain section 38 which at its opposite end is adjustably secured to a hook 39 carried by al rod i0 which is adjustably mounted in a securing yoke il by means of a nut Ll2 upon the threaded end 43 of the rod. Thisyoke ll may be secured to the harrow frame connection lla by a bolt 4A as shown in Figure 2. This form of draft connection provides for an adjustment of the rod and also for the chain links upon the rod in establishing the normal angular relation between the gangs of harrows.

If desired, a keeper plate 4:5 may be used upon the bracket to embrace the pivot 23 of the lever and this lever may also be formed with a connection 46 for its manual operation by the driver of the harrow if so desired, particularly| in its use'with a tractor, and such manual actuation does not affect its automatic operation under increased tension when turning the implement.

In Figures 6 and 7 a modified form of attaching the bracket for the draft lever is shown and comprises a plate 50 upon which the lever 51 is pivoted at 52, this plate being provided with a lateral flange 53 forniM ing a stop or abutment for the pivotal end 54C of the lever. The plate 50 also has a vertical extension 55 for the spring attachment and a keeper plate 56 similaito the plate 415 in Figure 8. The draft connection 57 is also provided with a roller adapted to rest in the seats of the draftlevcr as previously described.

y Tn the operation of the invention with the parts in the position shown in Figures l and 2, the harrow gangs operate in the usual manner and the draft connection between them establishes their normal relation relative to the line of draft. Tn this position the roller from the/draft connection rests in the seat at the pivotal end of the lever and the strain being against the vertical arm of the lever these parts are maintained in normal position, assisted by the tension of the connecting spring. When itA is desired to turn the implement the increased tension upon. the draft connection between the front and rear gangs swings the lever forward, as indicated by dotted lines in Figure 2, and the roller passes to thel seat at the opposite Vend of the lever where a rigid draft connection is again secured, the distance between the harrow gangs being increased equivalent to the length of the lever.

As soon as the abnormal strain incident to the turning movement is relieved the tension spring at once restores the lever to its normal position so that the operation of the yielding draft connection is entirely automatic in its application and restoration. 'c Tf desired, however, it may be manually operated by the driver of thev implement throughl a connection for that purpose, as if given a limited movement forward the roller and draft connection will complete the operation without awaiting the development of sufiicient strain to automatically operate the device. Means have been provided to limit the rearward movement of the lever under its spring tension so that such tension may be adjusted and determined to secure the most convenient` and effective operation of the invention. This draft Vconnection also prevents and resists any swinging motion of the gang sections upon their central pivotal coupling and effects greater efficiency in thev use of the tandem arrangement, relieving the strain both upon the horses and the driver.

l/Vhile the details of this invention have been specifically shown and described, it is not confined thereto, as changes and alterations may be made therein without departing from the spirit of the invention.

Having thus described my invention, what I claim as Vnew and desire by secure by Letters Patent, is:

l. Tn a harrow, the combination with front and rearl gang frames, of means pivotally mounting said frames at one end, and normallyl rigid draft means intermediate of said frames constructed to fleX upon abnormal tension thereon and extend the length of the draft means in the line of draft.V

2. lin a harrow, the combination of front and rear gang frames, means for pivotally mounting one 'end of said frames, a resilient` draft connection between said frames adapted to maintain a rigid connect-ion of normal length, and means for releasing said rigid connection upon abnormal tension between the gang frames to extend the length of the draft connection. V

3. In a harrow, the combination with front and rear gang frames, means for pivotally mounting one end of said frames, a resilient draft connection between t-he frames, and means for automatically extending and retracting the length of said connection.

4i. Tn a disk liarrow, the combination withv front and rear gang frames, of'means for pivotally mounting one end of said frames, a draft lever mounted upon one of the frames and provided with seats at its opposite ends, and a connection from the other gang frame disposed in one of said seats and adapted to travel to the opposite seat as the gangs are separated.

5. In a disk harrow, the combination with front and rear gang frames, of means for pivotally mounting one end of said frames,

llO

draft lever mounted upon one of the frames and provided with seats at its opposite ends, a connection from the other gang frame disposed in one of said seats and adapted to travel to the opposite seat as the gangs are separated, and resilient means for maintaining and restoring said lever.

6. In a disk harrow, the combination with front and rear gang frames, of means for pivotally mounting one end of said frames, a draft lever mounted upon one of the frames and provided with seats at its opposite ends, a connection from the other gang frame disposed in one of said seats and adapted to travel to the opposite seat as the gangs are separated, resilient means for maintaining' and restoring said lever, and means for adjusting the tension of said resilient means.

7. In a disk harrow, t-he combination with front and rear gang frames, of means for pivotally mounting one end of said frames, a draft lever mounted upon one of the frames and provided with seats at its opposite ends, a connection from the other gang frame disposed in one of said seats and adapted to travel to the opposite seatas the gangs are separated, resilient means for maintaining and restoring said lever, means for adjusting the tension of said resilient means, and means for adjusting the length of said draft connection.

8. In a disk harrow, the combination with front and rear gang frames, of a draftl lever pivotally mounted at its lower end upon one of said frames and provided with seats at its o-pposite ends, a draft connection provided vvith a roller normally disposed in ene of said seats and adapted to travel upon the lever to the opposite seat, and a tension device extending from the upper end of said lever to normally maintain the same in vertical position.

9. In a disk harrow, the combination with front and rear gang frames, of a draft lever pivotally mounted at its lower end upon one of said frames and provided with seats at its opposite ends, a draft connection provided with a roller normally disposed in one of said seats and adapted to travel upon the lever to the opposite seat, and a tension spring extending from the upper end of said lever to a liXed support carried by the gang frame.

10. In a disk barrow, the combination of front and rear gang frames, a supporting bracket secured to one of said frames, a draft lever pivot-ally mounted upon said bracket and provided with curved seats at its opposite ends and an intermediate track, tension means extending from the free end of said lever, an upright from said bracket to which said. tension means is attached, and

a draft connection from the other gang frame adapted to rest in said seats and traverse said track.

11. In a disk barrow, the combination of front and rear gang frames, a supporting bracket secured to one of said frames, a draft lever pivotally mounted upon said bracket and provided with curved seats at its opposite ends and an intermediate track, tension means extending from the free end of said lever, an upright from said bracket to which said tension means is attached, a draft connection from the other gang frame adapted to rest in said seats and traverse said track, and a stop portion carried by said lever and adapted to engage an abutment upon said bracket to limit the rearward movement of said lever under said tension means.

12. In a disk barrow, the combination with frontand rear gang frames, of a yieldingly mounted draft lever supported upon one of said frames, a connection comprising a yoke secured to the opposite `gang frame, a hook adjustably mounted in said yoke, a keeper carrying a pivoted roller to traverse said draft lever, and a link connection between said keeper and hook.

13. In a disk barrow, the combination of front and rear gang frames, a supportingr bracket secured to one of said frames and comprising,- angle plates with a vertical upright therefrom, a draft .lever pivoted to the vertical plate of said bracket and having its pivoted end disposed within an abutting recess in a horizontal plate of the bracket, tension means extending; from the free end of said lever to said upright, and a draft connect-ion from the opposite gang frame to said lever.

14. In a disk harrow.vv the combination of front and rear gang frames, a draft lever pivotally mounted upon one of said frames, tension means for maintaining said lever in substantially vertical position, and a draft connection from the opposite gang frame normally engaging` at one end of said lever and disposed to shift said lever to a hori- Zontal position under abnormal strain and then engage the opposite end thereof, whereby the distance between said gang` frames is increased.

l5. In a harrow, the combination with front and rear gangy frames, an adjustable draft device mounted upon one of the frames and adapted under abnormal conditions to increase the distance between said frames, a connection between the opposite frame and said device, and means for resiliently main taining and restoring* said device to normal position.

In testimony whereof I aflix my signature.

HENRY H. LOHME YER. 

